Question Author
Oh I see, thanks FF. I've copied and pasted below. At the top of the email there's an official-looking symbol which hasn't copied, but the text is as follows.
UK POLICE Court Case
On June 5, judicial complaint #27814517800 has been filed for you.
To see full information please view your court case.
You have to provide the court with all the necessary information within 15 days time, starting from the date this message was received. If the information is not provided the court may take place without your participation.
Ministry of Justice
Automated System of Judicial Complaints
The words 'your court case' are underlined and in blue - linked to another document - which I have not clicked on. Also, I've just noticed the wording is 'a complaint has been filed for you' - but the caller yesterday said 'a complaint has been filed against you'.